- Introduce
 + Coal spontaneous combustion tester is the national standard "Method of determining spontaneous combustion tendency by chromatography of coal" specified in my country's "Coal Mine Safety Regulations",
 + Determination of spontaneous combustion tendency by oxygen chromatography of coal
 + on the basis of "Technical conditions of equipment for determining spontaneous combustion by coal",
 + a special device designed to ensure the accuracy of technical indicators is a special device for determining the spontaneous combustion tendency of coal by means of oxygen absorption chromatography.